Lesson details

Key learning points

  1. In this lesson, we will solve subtraction equations using different strategies.

Licence

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3 Questions

Q1.
What would the best strategy be to answer this question: 29 + 30 = ?
Correct answer: Near doubles
Partitioning
Q2.
Which of the below shows 34 + 32 partitioned correctly?
Correct answer: 30 + 4 and 30 + 2
30 + 6 and 30 + 1
34 and 30 + 2
Q3.
27 + 30 =
37
Correct answer: 57
67

3 Questions

Q1.
Using the strategy, count back in tens, complete the equation: 43 - 20 =
20
Correct answer: 23
43
Q2.
59 + ? = 72
Correct answer: 13
50
7
Q3.
? = 32 - 20
Correct answer: 12
20
32

Lesson appears in

UnitMaths / Exploring calculation strategies